Dust-collector



(No Model.)

M. J. WEGK 8: F. S. IDESON. DUST COLLECTOR.

Patented Oct.2 2,1895,

I WITN ESSES I W %W%7 UNITED STATES PATENT Ost ich- MARTIN J. WEOK AND FRANCIS S. IDESON, 0F OSHKOSH, WISCONSIN.

DUST-COLLECTOR.

SPECIFICATION forming part of Letters Patent N 0. 548,490, dated October 22, 1895.

Application filed June 12, 1895. Serial No. 552,578. (No model.)

To all whom it may concern:

Be it known that we, MARTIN J. WEcK and FRANCIS S. IDESON, citizens of the United States, residing at Oshkosh, in the county of 5 Winnebago and State of \Visconsin, haveindust collectors or separators for separating dust from air which is drawn or conducted from the difierent machines in a mill or factory through pipes and blown into the dustcollector by an ordinary blower.

In dust-collectors heretofore used the dustladen air has been blown into a cylindrical separating-chamber through a tangential inlet and rotated around the cylinder until the dust became separated by centrifugal force. This has been eifected to separate the larger dust particles; but there has always been a small percentage of fine dust that did not become separated, and this small portion being continually scattered over the roots and portions of the factory in time accumulated in objectionable quantities. Also, in dust-collectors which introduce the dust-laden air tangentially into a cylinder, there is a continuous current of air under high pressure flowing across the opening of said tangential inlet, thereby creating cross -currents and a heavy back-pressure upon the fan.

The objects of our invention are toprevent back-pressure and to reduce the amount of dust in the purified air to a minimum.

The invention consists of certain novel constructions, combinations, and arrangements of parts, all of which will be hereinafter set forth and claimed.

In the accompanying drawings, forming part of this specification, Figure 1 represents a side elevation, partly in section, of the devices embodying our invention. Fig. 2 represents a transverse section of the same on the line w m of Fig. 1.

In the drawings, A is the outer cone and D the inner cone. The space B between the outer cone and inner cone is divided by spiral partitions O O O. The base or end of the outer cone is closed and that of theinner cone is open. I is the air and dust inlet, E the dust-outlet, and F the outlet for the purified air. At the apex of the inner cone is provided an outlet-pipe J, leading to a siphonpipe H, which is open at both ends. The spiral partitions C G 0 do not extend farther than the base of the inner cone, and the base of the inner cone is considerably within the base of the outer cone, leaving a separatingchamber K between the two.

The air and dust are blown in at the inlet I, and, striking against the spiral partitions O O (3 and c are deflected in a spiral direction and caused to rotate around the outside of the inner cone, the dust passing to the periph-v ery of the outer. cone and out at the outlet E. The purified air is forced around and up the insideof theinner cone, continuing to rotate, and from the center is forced out of the pureair outlet E, which consists of a pipe attached to the base of the outer cone and extending up into the inner cone.

The rotation of air in the outer cone does not clean the air any more perfectly than other separators; but from the outer cone the air in the separator is rotated insideot the inner cone and the remaining fiue dust is thoroughly eliminated, being constantly forced toward the open apex of the same, where it is sucked out through the pipe J by the siphon H, which extends longitudinallyiu one of the chambers between the outer and inner cones. Thislatter is the finer dust and passes around again through the same process of separation and out of the dust-collector E, as hereinbefore described. There is thus provided a duplex system of separation, the outer chamber serving to eliminate the coarser particles of dust and the inner chamber to eliminate and condense the finer particles.

In ouriuvention the axis of rotation is parallel with the inlet-pipe,thus avoiding all backpressure, which it has been impossible to overcome in other dust-collectors where the axis of rotation is at right angles with the inlet- 1pc. p In our invention the air is constantly rotated from the time it enters until it leaves ICO the machine, and is constantly expanded, permitting the dust to seek the periphery of the outer and inner cones.

Having now described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. In a dust collector, the combination with an outer closed cone having an air and dust inlet at its small end and dust outlet at the periphery of its large end, an inner concentric open cone communicating at its large end with the outer cone, spiral partitions dividing all of the space between said cones into spiral passages, a pure air outlet pipe leading from the interior of the inner cone, the construction and operation being such that the dust is thrown by centrifugal force into the periphery of the large cone and partly discharged through the opening therein, substantially as described. 7

2. In a dust collector, the combination with an outer closed cone having an air and dust inlet at its small end, an inner concentric open cone having a suction pipe at its small end communicating with the outer cone, spiral partitions between said cones, and a pure air outlet pipe leading from the interior of the inner cone, substantially as described.

3. In a dust collector, the combination with an outer closed cone having a dust and air inlet at its small end and a dust outlet at the periphery of its large end, an inner concentric open cone communicating at its large end with the outer cone and having a suction pipe at its small end communicating with the outer cone, spiral partitions between the cones, and a pure air outlet pipe leading from the interior of the inner cone, substantially as described.

In testimony whereof we affix our signatures in presence of two witnesses.

MARTIN J. WECK. FRANCIS S. IDESON. Witnesses:

W. WATERS, Jr., C. F. SAMUELSON. 

